The platform door system is a continuous barrier system, which is installed on the platform edge of the urban rail transit station, isolating the track travel area from the platform waiting area, and corresponding to ...The platform door system is a continuous barrier system, which is installed on the platform edge of the urban rail transit station, isolating the track travel area from the platform waiting area, and corresponding to the train door. The sliding door can be opened and closed through multi-level control. It is an important part of the urban rail transit. At the same time, the platform door system is also one of the main systems to directly protect and carry passengers. The operating state of the system and its equipment is directly related to the safety of passengers and the operating order of subway lines. Based on the author's work practice in Kunming Rail Transit Line 4, this paper analyzes the structure and function of the control system of the station door of rail transit, and on this basis explores the common faults of the station door in the daily operation of urban rail transit and its treatment methods.展开更多
The aerodynamic pressure disturbances induced by middle air shafts and bypass ducts in subway tunnels pose significant challenges to enhancing train operational speeds.A comprehensive series of full-scale experiments ...The aerodynamic pressure disturbances induced by middle air shafts and bypass ducts in subway tunnels pose significant challenges to enhancing train operational speeds.A comprehensive series of full-scale experiments are employed to examine the impact of these structural elements on the aerodynamic pressure characteristics of platform screen doors(PSDs)in high-speed subway stations.The experimental results reveal that peak pressures manifest on PSDs surfaces during two distinct scenarios in high-speed subway systems equipped with middle air shafts.One is compression pressure waves propagated from trains traversing the air shaft,and the other is train nearby flow when trains pass the PSDs directly.The peak positive pressures caused by train passing PSDs are much greater than compression pressure waves.Closing middle air shaft can reduce the passing pressure waves.The installation of bypass ducts at overtaking station entrances effectively mitigates peak negative pressures during train-PSD interactions,achieving a maximum reduction efficiency of 8%.These findings provide valuable insights for optimizing the structural design of high-speed subway tunnel systems.展开更多
文摘The platform door system is a continuous barrier system, which is installed on the platform edge of the urban rail transit station, isolating the track travel area from the platform waiting area, and corresponding to the train door. The sliding door can be opened and closed through multi-level control. It is an important part of the urban rail transit. At the same time, the platform door system is also one of the main systems to directly protect and carry passengers. The operating state of the system and its equipment is directly related to the safety of passengers and the operating order of subway lines. Based on the author's work practice in Kunming Rail Transit Line 4, this paper analyzes the structure and function of the control system of the station door of rail transit, and on this basis explores the common faults of the station door in the daily operation of urban rail transit and its treatment methods.
基金Project(51808460)supported by the National Natural Science Foundation of ChinaProject(2021YFG0214)supported by the Sichuan Science and Technology Program,China。
文摘The aerodynamic pressure disturbances induced by middle air shafts and bypass ducts in subway tunnels pose significant challenges to enhancing train operational speeds.A comprehensive series of full-scale experiments are employed to examine the impact of these structural elements on the aerodynamic pressure characteristics of platform screen doors(PSDs)in high-speed subway stations.The experimental results reveal that peak pressures manifest on PSDs surfaces during two distinct scenarios in high-speed subway systems equipped with middle air shafts.One is compression pressure waves propagated from trains traversing the air shaft,and the other is train nearby flow when trains pass the PSDs directly.The peak positive pressures caused by train passing PSDs are much greater than compression pressure waves.Closing middle air shaft can reduce the passing pressure waves.The installation of bypass ducts at overtaking station entrances effectively mitigates peak negative pressures during train-PSD interactions,achieving a maximum reduction efficiency of 8%.These findings provide valuable insights for optimizing the structural design of high-speed subway tunnel systems.
